If 4 x = 5 y = 20 z then z is equal to

CA Foundation · Quantitative Aptitude · PYQS · May 2025
If 4 x = 5 y = 20 z then z is equal to
(A) A. xy
(B) B. (x + y) / xy
(C) C. 1 / xy
(D) D. xy / (x + y)

Suggested Answer and Working Notes:

Correct Answer: Option (D)

D. xy / (x + y)

Topics: Part-A: Business Mathematics

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